Pressure governor control mechanism



May 13, 1947,

'B- D. BARTON PRESSURE GOVERNOR CONTROL MECHANISM Filed NOV- l5, 1943 Patented May 13, 1947 PRESSURE GOVERNOR CONTROL MECHANISM Benjamin D. Barton, Battle Creek, Mich., assignor to American-Marsh Pumps, Inc., Battle Creek, Mich.

Application November 15, 1943, Serial No. 510,318

16 Claims. 1

This invention relates t-o improvements in pressure governor control mechanism.

The main objects of this invention are:

First, to provide a governor for pumps operted or controlled by the pressure of the pumped uid.

Second, to provide a control mechanism for pumps in which the speed of the prime mover, such as an internal combustion engine, is easily controlled to drive the pump for maintaining a desired delivery pressure.

Third, to provide a structure capable of accomplishing these objects which may be readily adapted to types of pumping apparatus now in extended use.

Objects pertaining to details and economies of the invention will definitely appear from the description to followi The invention is defined in the claims. -f

A structure which embodies the features of the invention is illustrated in the accompanying drawing, in which:

Fig. 1 is a fragmentary side elevation of a motor vehicle equipped with my invention, the motor power being an internal combustion engine. Various parts are shown conventionally.

Fig. 2 is an enlarged fragmentary side elevation of parts of the governor control as embodied in the internal combustion engine.

Fig. 3 is a fragmentary view partially in horizontal section of the parts shown in Fig. 2.

Fig. 4 is an enlarged fragmentary elevation of the regulating valve.

Fig. 5 is a fragmentary view partially in section on line 5-5 of Fig. 4.

In the accompanying drawing I represents a motor vehicle and 2 the` internal combustion engine thereof. A centrifugal pump 4 is mounted on the front of the motor vehicle, this being provided with an intake or suction connection 5 and a discharge 6. The pump is suitably connected to the engine, the crankshaft of which is shown at 1. The details of the connection are not illustrated, but it will be understood that they ordinarily include a clutch so that the pump may be connected or disconnected as desired. Since these details form no part of my present invention they are not illustrated.

The carburetor is indicated at 8 and the intake of the engine is indicated at 9. The throttle valve is not illustrated. I insert in this engine intake 9 a governor valve housing I0, preferably having a bore of the same gauge` as the intake. Within this housing I mount the butter-- fly governor valve I I, the stem. I2 of which is provided with a pinion I3, The rack I4 is reciprocatingly mounted to coact with the pinion and this rack is connected to the diaphragm I5 which is subject to the pressure Within the pressure chamber I6. This lpressure chamber is connected by the conduit I'I to the pressure or delivery side of the pump. Y

In the embodiment illustrated the pressure chamber is also connected by the conduit I8 to the suction or inlet connection of the pump, the conduit I8 constituting a return or exhaust connection to the pressure chamber. The conduit I8 is preferably larger than the conduit II. In this embodiment the pressure connection I1 is provided with a regulating valve designated generally by the numeral I9, and the conduit I8 with a regulating valve designated generally by the numeral 20. It is not essential, however, to embody.both valves in a single installation and either Vvalve may be manipulated in manually regulating the pressure.

In Figs. 4 and 5 I illustrate a detail of the valve 20 which comprises the .casing 2I in the form of a coupling adapted to be inserted in the conduit, the damper or butterfly type of valve 22 having its stem 23 projecting forwardly and provided with a handpiece 24 having a pointer 25 operatively associated with the indicia segment 26. The governor valve is urged to its open position shown in Fig. 3 by the spring 21 which also urges the diaphragm against the pressure `within the pressure chamber I6. The adjustable stop 28 is provided to limit the closing movement of the valve I I.

With the parts thus arranged, the speed of the engine is controlled by the pressure generated by the pump, enabling maintenance of the desired pressure in the discharge of the pump without waste of fuel. I have illustrated the invention as adapted to a commercial truck having a centrifugal pump mounted thereon, such structures being quite widely used for re engines and for pumping water from drains, excavations and the like.

It will be noted that in the embodiment illustrated the conduit or pipe I8 is of larger diameter than the conduit or pipe I1. This is a desirable feature as it insures against unwanted back pressure from the discharge, but a more important feature is that with the manually adjustable regulating valve 22, the pressure within the pressure chamber may be controlled, thereby controlling the governor valve, making it possible to use the valve 22 as .a throttle valve for controlling the engine, in which case of course.

the regular throttle valve of the engine would be fully open. The spring 21 is of such strength or biasing capacity that it maintains the governor valve in its fully open position until the pressure within the pressure chamber rises above a predetermined degree. If this spring is biased at 120 pounds the .governor valve remains in fully open position until the pressure Within the lpressure chamber exceeds 120 pounds and overcomes the spring, moving the governor valve toward closed position. It will be appreciated that .the pressure within the chamber is controlled by regulating the inlet thereto or the outlet, preferably the outlet which, as statedfinthe embodiment illustrated has a capacity vexceeding that-of the inlet. This regulating valve for the discharge provides very effective control.

In the embodiment illustrated the discharge of the pressure chamber is connected-to the "intake of the pump. This is a desirable feature as 'it prevents wasting water and also prevents discharge of Water 'onto pavements and "the Elike. Another advantage 'is that the `regulating valve may be so adjusted that there is a continual flow of water through the conduits I1 and I8, thereby l'avoiding freezing. This adjustment can be made when the governor device .is :not :in fuse, as it :is not always desired v'to utilize I.the .pressure regulating feature.

I have illustrated and described my invention in a very practical embodiment thereof. I have `not attempted to illustrate yother adaptations, such as `to other types of `prime movers, -as it is believed vthis disclosure will enable the embodiment or Vadaptation of 'the invention Aas vmay be desired.

Having thus described 'my 'invention what 'I -cla'im as lnew and desire to secure by Letters Patent is:

1. 'The combination lwith an internal fcombustion engine and a pump vdriven Ithereby, of a butterfly `governor xvalve for the fuel :intake of said engine, said valve being provided with a stem having apinionthereon, apressure-chamber, a diaphragm subject to the lpressure with- 'insaid-chamber, a rack reciprocatingly rmounted to Icoact with said p'in'ion and operatively c0nnected'to said diaphragm, afspring acting to=urge the diaphragm against the lpressure within Lsaid chamber and to -urge said =valve toward open pofsition, an adjustable stop coacting with saidrack for limiting the closing movement pf said governor valve, va conduit connecting said pressure chamber to the pressure side of 'the pump, a return conduit connecting -sa'id pressure cham- 'ber to the intake `vof the pump, and Aa regulating valve in -said return conduit.

'2. The combination vwith .an internal rcombustion engine and a pump driven thereby, Aof 'a governor valve for the vfuel -intake of said engine, Isaid -valve being `provided with a stem Shav- -ing a 'pinion thereon, a pressure-chamber, Aafdia- Dhlagm subject tothe `pressure-within said chamber, a rack reciprocatingly mounted to coact `with 'said pinion and operatively connected to said diaphragm, ya lspring acting -to urge the .diaphragm against the pressure within said chamber and tourge 'said valve 'toward open position,

a 'conduit connecting said pressure cli-amber 'to the pressure side -of the pump, a discharge for said pressure chamber, and a valve forregulating the flow of fluid'through saidlpressurechamber.

3. 'The vcombination with an internal .combustion `engine and a pump .driven thereby, of :a

fuel intake governor valve for said engine, a pressure chamber, a pressure actuated member subject to the pressure within said chamber operatively connected to said governor valve, means acting to urge said pressure actuated member against the pressure within said chamber and Ato .urge said governor valve toward open position, a conduit connecting said pressure chamber to the pressure side of the pump, a return conduit connecting said pressure chamber to the intake side of the pump, and a flow regulating valve in said return conduit, said return conduit and said conduit permitting continuous ow of fluid therethrough during the operation of the pump whereby said flow regulating valve may regulate the pressure in said chamber and whereby freezing of `the uid in said conduit and return conduit is prevented.

4. The combination with an internal combustion engine and a pump driven thereby, of a fuel .intake governor valve for ysaid engine, a pressure chamber, a pressure .actuated member subject to the pressure within said chamberoperatively connected to said governor valve, means acting to urge said pressure actuated member against the pressure within said chamber and .to urge said valve toward open position, Va conduit connecting said pressure chamber Ato .the pressure side of the pump, a discharge for said pressure chamber, and a regulating Vvalve for :regulating the now of fluid from said pump vto said pressure chamber, said conduit and discharge permitting continuous flow of fluid therethrough during the operation of the pump wherebysaid valve may regulate the pressure in said .chamber and whereby freezing ofthe fluid in said 'connection and-discharge is prevented.

5. The combination with an internalcombustion engine and a pump driven thereby, .of a governor valve for said engine, ra pressure :chamber, Va movable pressure actuated member :subject to the pressure within said pressure .cham- .ber and operatively connected `to rsaid governor valve, a spring acting to -return said pressure actuated member-and to Iurge said governor .valve to open position, a connection for said :pressure chamber to the ypressureside of the pump,:a .return connection for said ypressure chamber to the intake side of the pump, and a :regulating valve for controlling the flow 0f iluid .through said connections, said connection, and :return connection permitting continuous flow'oftheziiuid therethrough during operation 'of the pump whereby the flowregulating valve ,may control the pressure in said chamber .and whereby :freez- -ing ofthe fluid in said connections is prevented.

y6. The combination with an internal combustion -engine and a pump driven thereby, lof a .governor valve for said engine, a pressure chamber, a movable member subject to the pressure within said pressure chamber and *operatively connected to said governor valve, a spring 'acting vto return said-pressure yactuated member and pressure chamber, tocontrol the pressure in the chamber, and a `discharge 'permitting continu- -ous iiow of fiuid ethrough said chamber and Afluid connection during 'the operation of `the pump,

whereby said -flow regulating valve may control `theipressurein said chamber.

7. .The combination with an -internal combustion engine and a pump driven thereby, of a. governor valve for said engine, a pressure chamber, a movable member subject to the pressure within said pressure chamber and operatively connected to said governor valve, a spring acting to return said pressure actuated member and to urge said governor valve to open position, a iiuid connection for said pressure chamber to the pressure side of the pump, and a return connection to the intake side of said pump to permit continuous ow of the fluid through said connections during the operation of the pump.

8. The combination with an internal combustion'engine and a pump driven thereby, of a fuel intake governor valve for said engine, a pressure chamber having a fluid connection to the pressure side of the pump, a pressure actuated member operatively connected to said governor valve and subject to the variation in pressure within said chamber, means acting to urge said pressure actuated member against the pressure within said chamber and to urge said valve toward open position, an adjustable stop for limiting the closing movement of said governor valve, a manually adjustable regulating valve for regulating the ow of iiuid from the pump to said pressure chamber, to control the pressure in the chamber, and a discharge permitting continuous flow of fluid through said chamber and fluid connection during the operation of the pump, whereby said flow regulating valve may control the pressure in said chamber.

9. The combination with an internal combustion engine and a pump driven thereby, of a fuel intake governor valve for said engine, a pressure chamber having a fluid connection to the pressure side of the pump, a pressure actuated member operatively connected to said governor valve and subject to the variation in pressure within said chamber, means acting to urge said pressure actuated member against the pressure within said chamber and to urge said valve toward open position, a manually adjustable regulating valve for regulating the flow of fluid from the pump to said pressure chamber, to control the pressure in the chamber, and a discharge permitting continuous flow of fluid through said chamber and fluid connection during the operation of the pump, whereby said flow regulating valve may control the pressure in said chamber.

10. The combination with an internal combustion engine and a pump driven thereby, of a fuel intake governor valve for said engine, a pressure chamber having a fluid connection to the pres.. sure side of the pump, a pressure actuated member operatively connected to said governor valve and subject to the variation in pressure within said chamber, an adjustable stop for limiting the closing movement of said governor valve, a manually adjustable regulating valve for regulating the flow of iiuid from the pump to said pressure chamber to control the pressure in said chamber, and a discharge permitting continuous flow of fluid through said fluid connection during the operation of the pump, whereby said flow regulating valve may control the pressure in said chamber.

11. The combination with an internal combustion engine and a pump driven thereby, of a fuel intake governor valve for said engine, a pressure chamber having a fluid connection to the pressure side of the pump, a pressure actuated member operatively connected to said governor valve and subject to the variation in pressure within said chamber, a manually adjustable regulating Valve for regulating the flow of fluid from the pump to said pressure chamber to control the pressure in said chamber, and a discharge permitting continuous flow of fluid through said fluid connection during the operation of the pump, whereby said flow regulating valve may control the pressure in said chamber.

12. In a pressure control mechanism for fluid pumps, the combination with a fluid pump and a prime mover therefor, of means for governing the speed of said prime mover including a pressure chamber having fluid connection to the discharge side of the pump to receive fluid under pressure therefrom, a governor member operatively connected to the governing means for the prime mover and subject to variations in pressure within said pressure chamber to be actuated thereby, a return fluid connection for said pressure chamber to the intake side of the pump, and a manually adjustable regulating valve for regulating the flow of fluid from the pressure side of the pump t0 said pressure chamber, said fluid connections to and from said chamber permitting flow of the fluid therethrough during the operation of the pump whereby said adjustable flow regulating valve may control the pressure in said chamber.

13. In a pressure control mechanism for fluid pumps, the combination with a fluid pump and a prime mover therefor, of means for governing the speed of said prime mover including a pre-ssure chamber having fluid connection to the discharge side of the pump to receive fluid under pressure therefrom, a governor member operatively connected to the governing means for the prime mover and subject to variations in pressure within said pressure chamber to be actuated thereby, a manually adjustable regulating valve for regulating the flow of fluid from the pressure side of the pump to said pressure chamber to control the pressure in said chamber, and a discharge permitting continuous ow of fluid through said fluid connection during the operation of the pump, whereby said flow regulating valve may control the pressure in said chamber.

14. The combination with an internal combustion engine and a pump driven thereby, of a fuel intake governor valve for said engine, a pressure chamber having a uid connection to the pressure side of the pump, said pump having a discharge passageway for passage of fluid under pressure from the pump, said discharge passageway beingseparate from said fluid connection to permit flow of one portion of the fluid through said discharge passageway and another portion through said uid connection and said pressure chamber, whereby the pressure in the pressure chamber is subject to onlya portion of the flow of fluid from the pump, a pressure actuated member operatively associated with the governor valve and subject to the variations in pressure within the chamber, a spring acting to urge said governor valve to open position and said pressure actuated member against the pressure within the chamber, said spring being adapted to maintain the valve in open position until the pressure on the pressure actuated member exceeds a predetermined degree, a fluid discharge connection for said pressure chamber of a capacity exceeding that of the uid connection to the pressure side of the pump, and a manually adjustable regulating valve for said discharge connection, said discharge connection permitting flow of uid therethrough and also through said fluid connection during the operation of said pump.

vdischarge passageway for passage of fluid lunder pressure from the pump, said discharge passageyway being separate from said fluid connection to permit flow of one portion of the fluid through said discharge passageway and another portion through said fluid connection and said pressure chamber, whereby `the pressure in the pressure .chamber is subject to only a vportion of the ow of -uidrrom the pump, a pressure actuated mem- Yber operatively associated With the governor valve Aand subject to the variations in pressure within the chamber, yielding means acting to Aurge said governor Avalve to open 7position .and said pressureactuated member against the pres- .sure within the chamber, said yielding means being adapted to maintain the valve in open position until the pressure on the pressure actuated member exceeds a predetermined degree, and a-discharge for said pressure chamber provided with a regulating valve, said discharge permitting the flow of uid therethrough and also through said fluid connection during the yopera -tion of the pump.

16. The combination with a fluid Apump and a prime mover having driving connections thereto, of ,means for governing said prime mover including a pressure chamber having uid connection to the pressure side of the pump, said Vpump having a discharge passageway for passage of fluid under pressure from the pump, said-dis- .chargepassageway being separate vfrom said `fluid connection to permit flow of one portion ofthe fluid through said'discharge passageway and an- -other portion through said fluid connection and said pressure chamber, whereby the pressure .1in the pressure chamber is subject to only a portion of the now of fluid from the pump, a governor member operatively connected to the governing means for -said prime mover, a spring means acting to urge said governor memberto its full predetermined speed position, and ya ldischarge for said pressure chamber provided with l'a manually adjustable operating valve whereby ethe pressure within said pressure chamber may be regulated -to thereby regulate the prime lmover governing means, said discharge permitting the ilow-of fluid therethrough and also through said uid connection during the operation -of the pump.

BENJAMIN D. BARTON.

REFERENCES CITED The following references are of record in `llthe 'le of this patent:

UNITED STATES yPATENTS Number Name Date 1,966,356 'Ofeldt July 10, 1934 530 2,126,863 Barton Aug. 16, 1-938 1,057,909 Wright Apr. l, 1913 1,536,697 Wechsbergr May 5, 1925 '882,085 Warren Mar. v1'7, 1908 

